The investment seeks investment results that generally correspond to the price and yield performance of the index. To maintain the correspondence between the composition and weights of the securities in the trust (the "securities") and the stocks in the NASDAQ-100 Index, the adviser adjusts the securities from time to time to conform to periodic changes in the identity and/or relative weights of index securities. The composition and weighting of the securities portion of a portfolio deposit are also adjusted to conform to changes in the index.